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Car of the Future?

07/05/2010 1:47 PM

OK how about this, This car is aerodynamic having been designed in a wind tunnel. Seats 4 people comfortably with upholstered seats, front seats can recline to make double beds. Steering column flattens out and is bent to attach to steering wheel making a safety 'net' in case of a collision. The body has 'break' points so in case of a collision, the sheet metal crumples, acting as a 'spring' absorbing the shock of the collision and NOT passing it on to the passenger compartment. both front and rear. Of course the car is front wheel drive with disc brakes up front but not just ordinary brakes, but full power brakes, the power coming from a 2000 PSI hydraulic pump. Brake 'pedal' is actually a large button, what is more it is positioned so that you can just slide your foot off of the gas pedal and on to the brake 'button' w/o lifting your foot. Brakes are inboard right along the trans axle and there are cooling ducts that bring air right onto the disc. The car had Oleopnumatic suspension ( air oil, suspensions was NOT regular springs, but sort of 4 super shock absorbers, spheres w/ sealed compressed nitrogen on top, a separator, and hydraulic fluid, with a special scintered disc between the sphere and the suspension column. All 4 suspension units were interconnected and front and rear anti sway bars also helped determine hight of the car (which you could adjust from 3 inches ground clearance up to 11 inches. car was self leveling, if you got 4 people and luggage into the car, car would of course sink down but then automatically adjust and raise itself to proper height. and of course you could adjust the height yourself with a flick of a lever . And while radial tires are not new, this car was designed from scratch for radial tires, but more important, the wheels were pivoted on the center, so if you got a flat, your car would not lose control. ( in fact this car was so balanced it could ride on 3 wheelers ). The car was also self jacking using the hydraulic suspension system. The Gas tank was under the rear seat where it was protected by a 'box' frame, the only way that gas tank could be punctured was if you were broadsided by a 18 wheeler ( and who would care at that point ). The headlights were connected to the steering ( which of course was power rack and pinion ) and the high beams followed the steering wheel, turning into the turn, illuminating what you were turning into, this would give you at least 2 or 3 seconds warning that there was something there, which often could be the difference between hitting something ( or someone ) and stopping in time. There are other features of this car but you can google it. And yes this car WAS in production, I'm talking about the 1968=69 Citroen DS 21, (in fact here is a picture of the 69 on mars ( did you know the French had a mars rover??? )

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#1

Re: car of the future ?

07/05/2010 2:10 PM

My friend had one back in 1968.

Other than the fact that there was but one repair center within a 500 mile radius of the Chicago area, and problems associated with the inboard brake disks related to transmission of forces through the half shafts and CV joints, it was a very fine car.

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#3
In reply to #1

Re: car of the future ?

07/05/2010 6:20 PM

Agreed there was the problems of not enough dealers ( I know I worked for one I was a part time citroen sales man ) I did not see much of a problem with the brakes, especially once you started using the LHM ( mineral hydraulic oil ). there was a problem with cars that used brake fluid alas and these cars were not rust proof enough ( we would often have them rustproofed before selling them )

the main thing I was showing was that we could have produced the car of the future 40 years ago but didn't. Electric cars show promise alas the high cost of batteries make them impractical at present ( example if you have a 50 HP electric motor ( comparable w/ a 100 HP IC ) and you wanted to run it for 2 hours ( 50 MPH * 2 hrs = 100 miles on a charge ) you wold need 50 * 746Whrs * 2 or a battery capable of delivering 74,600 WHrs . Currently LIPo batteries have the best weight to power ration but a/ they are finicky in charging, b have only about a 300 to 400 charge life ( ie times they can be discharched and charged before dying . Worse if over charged or overdrained they can burst into flames ( I know trust me I had one do that ). LiFePo batteries are a possible solution currently a 3.2V 100 Amp 'cell' costs about 135 dollars in units of 1000 that is about 42 cents a WHr, in larger quantities prices come down to about 35 cents a Whr let's use the lowest price that comes out to about 26,110 dollars for a set of batteries to power an electric car w/ a 50 HP elec motor for about 100 mile range per charge. If we can get the solar gravitational hydrogen economy up and running and have a reasonable supply of affordable hydrogen, then the fuel cell car might be possible, but that is for another comment . HLG

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#2

Re: car of the future ?

07/05/2010 4:09 PM

Nostalgic memories.

I had a ID19 in about 1964-5. Most of the features are true for it.

It was great - except for the scarce service centres in SA.

There was a dispute between Citroen and Michelin and if came out with a set of hard rubber local tyres. Due to that and some hard youth driving that set lasted only about 10000 miles.

But the car was great - I survived a left front tyre blowout at 85 Mph on a dirt road curve without a scratch.

Once I had 2 punctures on a trip (in a hurry) The second flat I only realised when the tyre was already smoking hot (left back) from occasionally touching the tar road. I finished the trip on three wheels (2 wheels in the boot) In time for my meeting. I passed a highway patrol - but they could not catch me from behind.

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#4
In reply to #2

Re: car of the future ?

07/06/2010 8:53 AM

Hendrik, I am still driving a 1974, 1220Club Citroen at Hermanus. The engine is a twin overhead valve air cooled boxer. Did you know that the two camshafts are different to each other as for overlap and cam-profiles? One is designed for low speed torque and the other for high speed.

I recently fitted "tyre valves" to the suspension spheres and had it pumped up with air [could not find nitrogen] to 50barr by the people who fill diving bottles. The car is a convertiseur..thus semi automatic..no clutch pedal but gear selection by hand. It has only done only 66 000 km. I do not think that any other car can match the comfortable ride of a Citroen. I am using Automatic transmision fluid for the gearbox and suspension...so far so good!

jurie sa [Hermanus]

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#5

Re: Car of the Future?

07/06/2010 4:35 PM

Do they still make such good cars at Citroen ? or has the new technology taken them over too ?

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#6

Re: Car of the Future?

07/06/2010 8:31 PM

Yea, but it's French. Quirky does not even begin to describe these things. There are some out there with Masarati engines in them.

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#7
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Re: Car of the Future?

07/07/2010 4:03 PM

Let's just hope they never sponsor a NASCAR team.

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#8
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Re: Car of the Future?

07/07/2010 4:58 PM

You know there is some advantages in an adjustable suspension like theirs.

Lower on straights, raise left side on entry. Repeat. Repeat. Re............

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